InChI=1/C18H16N4O4/c1-10-5-12(6-13(8-19)17(23)21-18(20)24)11(2)22(10)14-3-4-15-16(7-14)26-9-25-15/h3-7H,9H2,1-2H3,(H3,20,21,23,24)/b13-6+/f/h21H,20H2 F1E98270F5B233C1